I've got a 73 duster with a 318 600 holley, edelbrock intake, stock exh man and a single 2" exhaust and it wouldn't pull the skin of a rice pudding. I've checked the timing and adjusted the carb but it just sounds so flat, i swear it's one of the slowest cars i've ever owned. Lol Mick
69 Dart GTS 440 mopar .590 cam, Edelbrock heads, 3200# best et 6.45, 106.78, 10.14, 132.88 mph, 1.47 60ft best 60ft 1.36